Submission #428785

#	Time	Username	Problem	Language	Result	Execution time	Memory
428785		alishahali1382	Comparing Plants (IOI20_plants)	C++14	5 / 100	131 ms	9436 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>
#pragma GCC optimize("O2")
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
#define debug(x) {cerr<<#x<<"="<<x<<"\n";}
#define debug2(x, y) {cerr<<"{"<<#x<<", "<<#y<<"}={"<<x<<", "<<y<<"}\n";}
#define debugp(p) {cerr<<#p<<"={"<<p.first<<", "<<p.second<<"}\n";}
#define debugv(abcd) {cerr<<#abcd<<": "; for (auto dcba:abcd) cerr<<dcba<<", ";cerr<<"\n";}
#define pb push_back
#define all(x) x.begin(), x.end()
#define SZ(x) ((int)x.size())

const int inf=1000000100; // 1e9
const ll INF=10000000001000000; // 1e16
const int mod=1000000007;
const int MAXN=200010, LOG=20;

int n, m, k, x, y, u, v, t, a, b, ans;
int A[MAXN], L[MAXN], R[MAXN];

void init(int k, vi _A){
	assert(k==2);
	n=SZ(_A);
	for (int i=0; i<n; ++i) A[i]=_A[i];
	for (int i=1; i<3*n; i++) if (A[(i-1)%n]) L[i%n]=L[(i-1)%n]+1;
	for (int i=3*n; i; i--) if (!A[i%n]) R[i%n]=R[(i+1)%n]+1;
	return;
}

int compare_plants(int x, int y){
	if (y<=x+R[x] || (L[x]>x && n+x-L[x]<=y)) return 1;
	if (y-L[y]<=x || (y+R[y]>=n && x<=y+R[y]-n)) return -1;
	return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25